Heading 2510: Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk
Every line of heading 2510 in the U.S. Harmonized Tariff Schedule, with its general (column 1) duty rate. Open a code for the landed cost calculator, trade agreement rates and email alerts if the rate changes.
Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk
Chapter 25: Salt; sulfur; earths and stone; plaster, lime and cement. Schedule checked on November 8, 2026.
Not always the total: additional chapter 99 duties (such as Section 232 or Section 301), antidumping or countervailing duties may apply depending on the country of origin. See recent chapter 99 changes →
Tariff lines
| HTS code | Official description | General rate |
|---|---|---|
| 2510.10.00.00 | Unground | Free |
| 2510.20.00.00 | Ground | Free |
Exporting this product from the U.S.?
Exports are reported with Schedule B numbers. Heading 2510 has 2 of them. Schedule B lookup →
- 2510.10.0000NATURAL CALCIUM PHOSPHATES, NATURAL ALUMINUM CALCIUM PHOSPHATES AND PHOSPHATIC CHALK, UNGROUND
- 2510.20.0000NATURAL CALCIUM PHOSPHATES, NATURAL ALUMINUM CALCIUM PHOSPHATES AND PHOSPHATIC CHALK GROUND
Source: U.S. International Trade Commission, Harmonized Tariff Schedule; Schedule B: U.S. Census Bureau. Information only, not legal or customs advice; U.S. Customs and Border Protection decides the classification and the duty. Confirm with a licensed customs broker before you ship.
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